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鍍鋁硅鋼板

作者:admin 發布時間: 2021-08-30 956 次瀏覽

鍍鋁硅鋼板

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產品簡介

鍍鋁鋼板是鋁硅合金鍍層的鋼板，其中鋁含量為90％，硅10％。

1．耐熱性能
鍍鋁鋼板的耐熱性能遠比鍍鋅鋼板、冷軋鋼板優越。由于鋼板基材和鍍層組織的特定組合，形成一種鐵鋁合金,使鍍鋁板具有極佳的耐高溫性。在約450℃時,可保證極高的反射率。在約550度以下予以長時間使用也幾乎不發生變化，仍保持其美麗的光澤，但超過約600度的高溫時，由于鐵鋁的相互擴散而合金化，表層由灰色逐漸變成深顏色，但金屬層的融點很高，即或超過鋁的融點，它也不融化析出。鍍鋁鋼板的耐熱性能（500-600℃）與不銹鋼板幾乎相同，而比冷軋鋼板優秀20倍以上。

2．熱反射性能

鍍鋁鋼板的表面，不僅加工美麗，且有優秀的反射性能，在500℃以下的溫度下，具有80%左右的光反射率；紅外線下的反射率竟達到95%。因此鍍鋁板可制成高效的隔熱屏障或者在高溫應用中的熱反射器，通過有效的熱反射使爐內溫度迅速升高。

3．耐腐蝕性

鋁在離子系列中，較Mn、Mo、Cr、W、Cd、Fe、Zn更趨于阻性。但由于鋁的氧化膜本身具有良好的穩定性，因此表層的耐蝕性，除了一部分環境條件外，要比鍍鋅鋼板優秀很多。在熱浸鍍加工過程中,熔融的鋁立即與空氣中的氧反應形成一層Al2O3保護層,使鋼板表面立即鈍化。這個保護層本身非常穩定且不溶于水，即使后來鋼板表面被劃傷，這個保護層也具有自愈功能。因此，鍍鋁板對化學腐蝕有極強的耐蝕性。

4．綠色環保性能

鍍鋁鋼板的鍍鋁層是由鋁、硅和鐵元素組成。經日本政府屬下的一些權威機構檢測證實，未化學鈍化的鍍鋁鋼板符合食品衛生法，對人體的健康無害，可直接應用于食品加工。許多專業團體的測試報告證明其對人體無害屬環保產品。鍍鋁板完全可以循環利用。

5．加工性
鍍鋁鋼板的基板與鍍層之間，由于存在鐵鋁合金，因此，一般被認為比冷軋鋼板、鍍鋅鋼板等的加工性差。但就鍍鋁鋼板的各種加工特性，如能按方法予以處理就能獲得幾乎與其它鋼板相同的加工結果。
6．焊接性
與冷軋鋼板相比較時，在焊接條件方面有所不同。由于鋁金屬比較軟，因此易結合，且因導電性較強，故焊接部分的散熱性比冷軋鋼板優秀。另外，鍍層比鍍鋅鋼材的融點高，不易流動，溶融面積小，因此不必使用鍍鋅鋼板那么大的電流。
7．涂層性能
在鍍鋁鋼板上涂層時，為使粘著性穩定，需進行化學被膜生成的前處理。
鍍鋁鋼板是以“氣體擦拭法”熔融鍍層技術而制成的，與過去的輥壓鍍層法加工成的鍍層鋼板相比較，因無壓紋，故具有持久的光澤、更優秀的耐蝕性和抗風化性。

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